385778840

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{235231}}^1$

素因数の和:235283

約数の個数: 32

約数和(自身を含む): 889176960

約数和(自身を除く): 503398120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 235231, 470462, 940924, 1176155, 1881848, 2352310, 4704620, 9409240, 9644471, 19288942, 38577884, 48222355, 77155768, 96444710, 192889420, 385778840]

約数ペア:

[(1, 385778840), (2, 192889420), (4, 96444710), (5, 77155768), (8, 48222355), (10, 38577884), (20, 19288942), (40, 9644471), (41, 9409240), (82, 4704620), (164, 2352310), (205, 1881848), (328, 1176155), (410, 940924), (820, 470462), (1640, 235231)]